Hello!
I have discovered a strange (at least so it seems to me) behaviour
of Sage. Here is the problem:
I have a list of tuples of the following format:
(2000, 289.428000000000)
(2001, 289.557000000000)
(2002, 289.605000000000)
(2003, 289.617000000000)
(2004, 289.594000000000)
(2005, 289.624000000000)
(2006, 289.575000000000)
(2007, 289.547000000000)
(2008, 289.479000000000)
(2009, 289.586000000000)
And also I have two functions to work with these data:
def GT(t):
number = floor(t-global_temperature[0][0])
return global_temperature[number][1]
def dGT(t):
number = floor(t-global_temperature[0][0])
return (global_temperature[number+1][1] - \
global_temperature[number] [1])
And when I execute the simple code:
print(GT(2006), GT(2003), dGT(2006))
I get the following strange result:
(289.575000000000, 289.617000000000, -0.0280000000000200)
My question is: where do those low order digits come from? And how can
I get rid of them?
Thank you.
Vladimir
-----
<v...@ukr.net>
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